155134100 has 54 divisors (see below), whose sum is σ = 370055742. Its totient is φ = 56408000.

The previous prime is 155134099. The next prime is 155134139. The reversal of 155134100 is 1431551.

It can be written as a sum of positive squares in 3 ways, for example, as 81796 + 155052304 = 286^2 + 12452^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5690 + ... + 18510.

Almost surely, 2^155134100 is an apocalyptic number.

155134100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155134100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185027871).

155134100 is an abundant number, since it is smaller than the sum of its proper divisors (214921642).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155134100 is a wasteful number, since it uses less digits than its factorization.

155134100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12857 (or 12839 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 155134100 is about 12455.2840192426. The cubic root of 155134100 is about 537.3234033156.

Adding to 155134100 its reverse (1431551), we get a palindrome (156565651).

The spelling of 155134100 in words is "one hundred fifty-five million, one hundred thirty-four thousand, one hundred".